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Acquire the Signal
How the Analog Acquisition Modes Work
Sample mode retains the fi rst sampled point
from each acquisition interval. Sample is the
default mode.
Peak Detect mode uses the highest and
lowest of all the samples contained in two
consecutive acquisition intervals. This mode
only works with real-time, noninterpolated
sampling and is useful for catching high
frequency glitches.
Hi Res mode calculates the average of all
the samples for each acquisition interval.
This mode also only works with real-time,
noninterpolated sampling. Hi-Res provides
a higher-resolution, lower-bandwidth
waveform.
Envelope mode fi nds the highest and lowest
record points over all acquisitions. Envelope
uses Peak Detect for each individual
acquisition.
Average mode calculates the average value
for each record point over a user-speci fi ed
number of acquisitions. Average uses
Sample mode for each individual acquisition.
Use average mode to reduce random noise.
Changing the Acquisition Mode, Record Length, and Delay Time
Use this procedure to change the acquisition mode.
1. Push Acquire .
MDO4000 Series Oscilloscopes User Manual 57